United States · 1991–2020

Best time to visit
Seaside.

August leads for comfortable weather in Seaside: typically 19°C by day, 11.8°C at night, with 30 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high19°C

Typical low11.8°C

Rain in August30 mm

Comfort

August

August · July · September

76climate match

Beach

August

August · July · September

43climate match

Outdoors

August

August · July · September

92climate match

The weakest month is January, scoring 5 against August’s 76 — days reach only 10.9°C, 13° below the 24°C the score treats as ideal, and 292 mm of rain falls.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

510.9° / 3.9°

Feb

511.5° / 3.4°

Mar

512.2° / 4.1°

Apr

1813.4° / 5.4°

May

4115.2° / 7.9°

Jun

5716.7° / 10.1°

Jul

7418.3° / 11.6°

Aug

7619° / 11.8°

Sep

6619.1° / 9.8°

Oct

3316.4° / 7.4°

Nov

512.7° / 5.2°

Dec

510.7° / 3.6°

Monthly climate evidence for Seaside — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 15 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	10.9°C	3.9°C	292 mm	19.3	9.1°C	9 h 01	5	Strong coverage
February	11.5°C	3.4°C	205 mm	16.2	8.9°C	10 h 16	5	Strong coverage
March	12.2°C	4.1°C	237 mm	18.5	9.3°C	11 h 45	5	Strong coverage
April	13.4°C	5.4°C	167 mm	15.3	10.4°C	13 h 28	18	Strong coverage
May	15.2°C	7.9°C	101 mm	11.6	12.4°C	14 h 55	41	Strong coverage
June	16.7°C	10.1°C	68 mm	8.8	14.2°C	15 h 43	57	Strong coverage
July	18.3°C	11.6°C	27 mm	4.5	14.8°C	15 h 24	74	Strong coverage
August	19°C	11.8°C	30 mm	4.6	14.9°C	14 h 09	76	Strong coverage
September	19.1°C	9.8°C	69 mm	6.9	14.3°C	12 h 29	66	Strong coverage
October	16.4°C	7.4°C	171 mm	12.9	12.8°C	10 h 50	33	Strong coverage
November	12.7°C	5.2°C	298 mm	18.2	11.1°C	9 h 23	5	Strong coverage
December	10.7°C	3.6°C	305 mm	19.9	9.7°C	8 h 40	5	Strong coverage

What has changed

Seaside runs -0.7°C
on the 1961–1990 baseline.

Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.

Jan

+0.7

Feb

-1.7

Mar

-1.1

Apr

-0.6

May

-1.1

Jun

-1.3

Jul

-1.3

Aug

-0.8

Sep

-1.1

Oct

-0.9

Nov

-0.2

Dec

+0.5

August daytime highs, 2011–2025. Last recorded: 19.3°C.

Records at SEASIDE, 1930–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	22.8°C30 Jan 1940	-11.7°C29 Jan 1980	117 mm6 Jan 2022	732 mm1953 · driest 20 mm in 1985	96
February	25.0°C4 Feb 1984	-12.8°C5 Feb 1989	107 mm27 Feb 1936	584 mm1961 · driest 29 mm in 2005	97
March	25.6°C10 Mar 1934	-6.1°C13 Mar 2012	102 mm12 Mar 1935	446 mm2012 · driest 31 mm in 1965	97
April	30.0°C30 Apr 2014	-4.4°C5 Apr 1975	78 mm23 Apr 1996	304 mm1996 · driest 23 mm in 1977	97
May	30.0°C19 May 1978	-3.3°C20 May 2012	77 mm19 May 2005	226 mm1933 · driest 4 mm in 2018	96
June	29.4°C11 Jun 1932	2.2°C26 Jun 1974	64 mm12 Jun 2000	200 mm1946 · driest 7 mm in 2021	96
July	30.6°C7 Jul 1952	1.7°C9 Jul 1940	51 mm13 Jul 1983	193 mm1983 · driest 2 mm in 1930	94
August	31.7°C30 Aug 1968	0.0°C31 Aug 1986	79 mm22 Aug 2001	121 mm1968 · driest 0 mm in 2006	94
September	35.0°C24 Sep 1974	-1.1°C8 Sep 1983	84 mm28 Sep 2013	263 mm2013 · driest 2 mm in 1991	94
October	33.3°C9 Oct 1936	-4.4°C30 Oct 1935	102 mm31 Oct 1942	372 mm1950 · driest 13 mm in 1987	94
November	26.1°C1 Nov 1962	-10.0°C14 Nov 1955	152 mm6 Nov 2006	623 mm2006 · driest 24 mm in 1936	93
December	21.7°C18 Dec 2004	-15.0°C8 Dec 1972	252 mm18 Dec 1933	1181 mm1933 · driest 78 mm in 1976	94

Typical days per month at SEASIDE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	6	9
February	0	0	6	6
March	<1	0	4	7
April	<1	0	1	6
May	<1	0	<1	3
June	<1	0	0	2
July	<1	0	0	<1
August	<1	<1	0	<1
September	2	<1	<1	2
October	1	0	<1	5
November	0	0	4	9
December	0	0	5	9

How often, not how much — every day in SEASIDE’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	<1%	62%	32%	79%	8.3–12.8°C
February	2%	60%	27%	78%	9.7–14.5°C
March	4%	59%	25%	77%	10.5–14.8°C
April	6%	49%	17%	65%	12.4–15.9°C
May	8%	37%	9%	48%	14.3–17.4°C
June	12%	31%	8%	38%	16.0–19.2°C
July	32%	17%	3%	16%	17.8–20.7°C
August	40%	17%	4%	16%	18.3–21.0°C
September	35%	25%	8%	31%	18.2–21.7°C
October	16%	42%	19%	59%	15.5–18.7°C
November	2%	60%	30%	81%	11.5–14.9°C
December	<1%	65%	34%	81%	9.0–12.7°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

1930Each stripe is one year’s mean temperature against the 79-year average. Warmest: 1931. Coolest: 1955.2022

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5750984
NOAA station: USC00357641 · SEASIDE
Station distance: 0.7 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 27 usable years
Daylight: Calculated from latitude 45.99°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 15 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

These places read the same station, so their numbers are identical — distance from SEASIDE is what differs

Cannon Beach→Gearhart→Manzanita→Nehalem→Neahkahnie Beach→Neahkahnie→

Or put two places side by side: Seaside vs Cannon Beach

Best time to visitSeaside.

August

August

August

The whole year,without the guesswork.

Seaside runs -0.7°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Seaside.

The whole year,
without the guesswork.

Seaside runs -0.7°C
on the 1961–1990 baseline.

Nearby, measured,
and named.